Value Collection MP39337 Hex Head Cap Screw 5/16-24x3 Grade 8

Product Description

The VALUE COLLECTION MP39337 is a Grade 8 steel hex head cap screw designed for high-strength fastening applications requiring fine-thread precision. Measuring 5/16-24 thread size with a 3-inch length under head, this screw features partial threading and a zinc yellow dichromate finish that provides corrosion resistance in demanding environments. Manufactured to ASME B18.2.1 standards, it is appropriate for mechanical assemblies, equipment mounting, and structural connections where tensile strength and dimensional consistency are critical. Machinists, millwrights, maintenance technicians, and general contractors regularly specify Grade 8 hardware for high-load fastening tasks.

This hex head cap screw is suited for industrial, commercial, and heavy-duty mechanical applications where UNF fine-thread engagement is required. Fine-thread fasteners like the MP39337 are commonly used in applications where vibration resistance or precise torque control is important, such as machinery frames, automotive assemblies, and fabricated steel structures. The zinc yellow dichromate finish makes it appropriate for moderately corrosive service environments. This item is sold in packages of 25 units with a minimum order quantity of 1.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 5/16-24 UNF fine-thread profile for improved vibration resistance
• 3-inch length under head with partial threading per ASME B18.2.1
• Zinc yellow dichromate finish for moderate corrosion protection
• Hex drive head accepts standard hex wrenches and sockets
• Packaged in quantities of 25 for shop and field use

Compatibility

Designed for use in standard 5/16-24 UNF tapped holes per ASME B18.2.1 specifications. Suitable as a replacement or stock fastener in any application requiring a Grade 8 hex head cap screw of this thread size and length.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or technician familiar with fastener grade requirements for the application. Ensure mating threads are clean and free of debris before installation. Always de-energize and lock out equipment before replacing fasteners in mechanical assemblies. Do not substitute a lower-grade fastener in applications where Grade 8 strength is specified by the equipment manufacturer.